Table 2.

Case types, situations, and outcomes for which frequency and recency features were derived for input into the predictive model. Examples are given per category.

Case category and classification example		Description
Types
	Incident	Case where help is sent to the subscriber
	Accidental	Subscriber accidentally pushed the help button
	Check-in	Social call by subscriber
Situations
	Breathing problems, chest pain, dizziness, fall, illness, other pain	Incident with subscriber experiencing breathing problems, chest pain, dizziness, a fall, illness, or other pain
Outcomes
	Check-in	Social call
	EMSa—transport	EMS sent to subscriber’s house—subscriber transported to hospital
	Responder—no transport	Responder sent to subscriber’s house—subscriber not transported to hospital

^aEMS: emergency medical service.